Hexavalent chromate reduction by immobilized streptomyces griseus

TitleHexavalent chromate reduction by immobilized streptomyces griseus
Publication TypeJournal Article
Year of Publication2008
AuthorsPoopal, AC, Laxman, RSeeta
JournalBiotechnology Letters
Volume30
Issue6
Pagination1005-1010
Date PublishedJUN
Type of ArticleArticle
ISSN0141-5492
KeywordsChromate reduction, Immobilized cells, polyvinyl alcohol, Streptomyces griseus
Abstract

Hexavalent chromium, which is a mutagen and carcinogen, was efficiently reduced by Streptomyces griseus. This activity was associated with the cell. Cr6+ reduction by free as well as immobilized cells was studied: cells in PVA- alginate had the highest ( 100%) Cr6+ removal efficiency in 24 h with reduction rates similar to free cells. Immobilized cells completely reduced 25 mg Cr6+ l(-1) in 24 h. PVA- alginate immobilized cells could be reused four times to completely reduce 25 mg Cr6+ l(-1) in 24 h each time. Chromate in a simulated effluent containing Cu2+, Mg2+, Mn2+ and Zn2+ was completely reduced by PVA- alginate immobilized cells within 9 h.

DOI10.1007/s10529-008-9662-0
Type of Journal (Indian or Foreign)

Foreign

Impact Factor (IF)

1.639

Divison category: 
Biochemical Sciences